xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rapidio: add handling of redundant routes

Browse Source 
Detects RIO link to the already enumerated device and properly sets links
between device objects.  Changes to the enumeration/discovery logic:

1. Use Master Enable bit to signal end of the enumeration - agents may
   start their discovery process as soon as they see this bit set
   (Component Tag register was used before for this purpose).

2. Enumerator sets Component Tag (!= 0) immediately during device
   setup.  This allows to identify the device if the redundant route
   exists in a RIO system.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Micha Nelissen <micha@neli.hopto.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexandre Bounine
2010-10-27 15:34:34 -07:00
committed by Linus Torvalds
parent a3725c45c1
commit af84ca38af
5 changed files with 64 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/rio.h
View File

@@ -177,6 +177,7 @@ enum rio_phy_type {
* @index: Port index, unique among all port interfaces of the same type
* @sys_size: RapidIO common transport system size
* @phy_type: RapidIO phy type
* @phys_efptr: RIO port extended features pointer
* @name: Port name string
* @priv: Master port private data
*/
@@ -198,6 +199,7 @@ struct rio_mport {
* 1 - Large size, 65536 devices.
*/
enum rio_phy_type phy_type; /* RapidIO phy type */
u32 phys_efptr;
unsigned char name[40];
void *priv; /* Master port private data */
};